229115520 has 128 divisors (see below), whose sum is σ = 811512000. Its totient is φ = 61092864.

The previous prime is 229115519. The next prime is 229115527. The reversal of 229115520 is 25511922.

229115520 is a `hidden beast` number, since 2 + 29 + 115 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (229115527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10651 + ... + 23909.

Almost surely, 2^229115520 is an apocalyptic number.

229115520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229115520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405756000).

229115520 is an abundant number, since it is smaller than the sum of its proper divisors (582396480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

229115520 is a wasteful number, since it uses less digits than its factorization.

229115520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13287 (or 13269 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 229115520 is about 15136.5623574179. The cubic root of 229115520 is about 611.9061755437.

The spelling of 229115520 in words is "two hundred twenty-nine million, one hundred fifteen thousand, five hundred twenty".